FYI the guy in the video I linked, the song's real music video,
is Mick Smiley. He didn't remix it for
Ghostbusters, someone working on the movie did.
They were adept at picking the most interesting parts of some otherwise terrible pop songs to use in the movie. The same sort of thing happened with "Savin' the Day". The original is very, um... I'll just be generous and call it "very '80s pop"...
http://www.youtube.com/watch?v=zj3OCyyN1sI
Whereas for the movie they picked out the best parts of it (the beginning), added a little extra oomph with more horns and a guitar, and made the best of what was otherwise not all that great:
http://www.youtube.com/watch?v=mNuG25oq_b0